Personaly I don't like most Americans since they think they own every single thing in my country (yes, even me! no doubt), it appears. I despise these ones in particular. I believe Americans are very, very RICH.
I believe that making generalizations about an entire country (one of the largest too) is perfectly acceptable and always correct, and that having any sort of proof would invalidate the whole idea. The only solution here is to unconditionally hate all people from that country based on the absolutely correct assumption that you have made.
You can see it from the government level right on down to the lower classes. Many of the people in this country who look the most wealthy are in fact only the most in debt. The majority of US citizens do not even own their own homes.
The US suffers from many economic diseases. It is like a person who owns nothing but lounges on pillows borrowed from one neighbor while dining on food grown by another neighbor - the person looks rich but is actually poorer than his neighbors.